---
name: "Arcane Subtraction"
mana_cost: "{1}{U}"
cmc: 2
type_line: "Instant"
colors: ["U"]
color_identity: ["U"]
keywords: ["Learn"]
set: "STX"
set_name: "Strixhaven: School of Mages"
collector_number: "36"
rarity: "common"
artist: "Anastasia Ovchinnikova"
oracle_id: "4b5806fa-430f-4b78-b874-63d01a8a9de5"
canonical_url: "https://avascry.com/printing/arcane-subtraction-stx"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "legal"
  penny: "not_legal"
---

# Arcane Subtraction
- **Mana Cost:** `{1}{U}` (CMC: 2)
- **Type:** Instant
- **Keywords:** Learn

## Oracle Text
Target creature gets -4/-0 until end of turn.
Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

> *那天全班学到了很小的东西。*

## Top 4096-Dim Neural Synergies
1. [Befuddle](/printing/befuddle-m20.md) — Instant
2. [Shocking Grasp](/printing/shocking-grasp-hbg.md) — Instant
3. [Fleeting Distraction](/printing/fleeting-distraction-avr.md) — Instant
4. [Bewilder](/printing/bewilder-ima.md) — Instant
5. [Pull Under](/printing/pull-under-chk.md) — Instant — Arcane
6. [Divide by Zero](/printing/divide-by-zero-plst.md) — Instant

## Printing Details
- **Set:** Strixhaven: School of Mages (STX) #36
- **Rarity:** Common
- **Artist:** Anastasia Ovchinnikova
- **Total Printings:** 11 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `legal` | Pioneer: `legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `legal` | Penny: `not_legal`